I took two weeks of intenstive studies of Spanish and one week of conversational classes. Most importantly, I had a lot of fun. It was great meeting new people, great learning from the really good teachers, great seeing fast progress in my Spanish. The school also arranged a lot of activities and there was something going on almost every day. In particular that was a good way of meeting other students outside of your class, and socializing in ways unrelated to the class room. Naturally, a lot of the time we'd still use Spanish amongst us students outside of the classroom too, proving to be a valuable way to practicing. I found that that was a good segue into also using Spanish with native speakers.
All in all, it was a great experience and I look forward to continuing the classes this autumn.